Michigan Contractor License: Requirements, Cost and Exams

The qualifier rule

Qualifying the company, and how many companies one agent can qualify

If a corporation, partnership, association, LLC, or other entity applies for a license, it must name one of its officers, partners, members, or its managing agent as the qualifying officer. That qualifying officer must personally pass the exam and hold an individual RB or M&A license, and must separately obtain a distinct license as qualifying officer for that company; every other officer, partner, or member of the company only needs to meet the general requirements, such as being 18 or older, not the knowledge and experience requirements (MCL 339.2405(1)). Michigan's statute, MCL 339.2405, does not set a numeric limit on how many companies one qualifying officer may qualify at the same time, and LARA's own Residential Builder FAQ page describes who can be a qualifying officer (owner, officer, director, member, partner, agent, or employee) without stating any number limit either (Michigan LARA Builders FAQ). The statute's language in MCL 339.2410 about adding "an additional license" without repeating the exam suggests the system is designed to let one qualified individual hold more than one company license, though this should be confirmed directly with LARA's licensing section (517 241 9316, LARA-BCC-Licensing@michigan.gov) before relying on an unlimited number of qualifying slots in Michigan.

Replacement rules and deadlines when a qualifier leaves

Michigan's rule on a departing qualifying officer is stricter than the grace period used in states like Florida or Utah. Under MCL 339.2405(4) (Michigan Legislature, section last amended by 2014 PA 176, effective June 17, 2014): "if the qualifying officer of a licensee ceases to be its qualifying officer, the license is suspended. However, on request, the department may permit the license to remain in force for a reasonable time to permit the qualification of a new qualifying officer." The moment a qualifying officer stops serving in that role, the company's license is suspended immediately, with no automatic window; the only relief is discretionary, granted on request, with no fixed number of days written into the statute. Michigan's administrative rules separately require the outgoing qualifying officer to notify the department in writing within 10 days of leaving and to return the wall license and pocket card, and require the remaining owners or officers to submit their own written request asking for time to find a replacement if they want to keep operating (Michigan Admin Code R 338.1526(4) and (5)). A Michigan license does not come with an automatic 60 or 90 day window like some other states; the license is suspended right away, and the company must proactively ask LARA for time to qualify a new officer.

Exams

Exam requirements and current vendor

PSI Services LLC is Michigan's exam vendor for the RB and M&A license, as well as for the electrical, plumbing, and mechanical trades (Michigan LARA PSI Examinations page; PSI Online; PSI candidate portal candidate bulletins). The RB exam has two parts, a 75 minute Business and Law section and a 180 minute Practice and Trade section, given together as a single combined 240 minute sitting (see Testing and exams below for the current combined format). PSI's bulletin text references "5 PSI testing centers... available 6 days a week" as general boilerplate language, but the bulletins name 7 specific Michigan testing centers; the list of 7 in the Testing and exams section below is the accurate count. A passing score on all or part of an exam stays valid for 1 year from the date it was passed (Michigan Admin Code R 338.1521(2)). If an applicant does not finish every application requirement, including any required exam, within 1 year of first applying, the application is void and the fee is forfeited (R 338.1521(1)).

NASCLA acceptance

Michigan does not participate in the NASCLA Accredited Examination for Commercial General Building Contractors. NASCLA's own list of participating state agencies currently names 20 participating agencies (Alabama, with two separate Alabama boards, Arizona, Arkansas, California, Florida, Georgia, Louisiana, Mississippi, Nevada, New Mexico, North Carolina, Oregon, two South Carolina boards, Tennessee, Utah, the Virgin Islands, Virginia, and West Virginia); Michigan and LARA are not on it (NASCLA, NASCLA commercial exam participating states). There is no NASCLA linked credit or waiver route into the Michigan RB or M&A license, consistent with the broader pattern that Michigan has no state commercial contractor license for NASCLA to plug into.

Testing and exams (from the candidate bulletins)

Every exam in this section runs through PSI Services LLC, under contract to LARA's Bureau of Construction Codes (BCC). PSI's test taker portal is the PSI candidate portal; each license program has its own scheduling page reached from there (Residential Builder, M&A, and Salesperson share the PSI Michigan builder exam portal, Electrical is the PSI Michigan electrical exam portal, Mechanical is the PSI Michigan mechanical exam portal), and PSI's phone line, 855 579 4635, books any of them by phone Monday through Friday 7:30 am to 10 pm and weekends 9 am to 5:30 pm Eastern. The details below come from three PSI candidate information bulletins: the combined Residential Builder, M&A Contractor, and Salesperson Handbook (copyright 2024, updated 11/1/2024), the Michigan Electrical Candidate Information Bulletin (effective 4/7/2026), and the Michigan Mechanical (BCC) Candidate Information Bulletin (effective 4/29/2026), checked 2026-07-14. A fourth exam, the Master Plumber and Plumbing Contractor exam, also runs through PSI, reported at 130 questions, 180 minutes, and a 70 percent passing score for $100 according to licensing preparation resources; confirm current plumbing exam details with LARA before relying on these figures.

Residential Builder examination

Scheduling is online at the PSI Michigan builder exam portal or by phone at 855 579 4635; no walk ins are allowed, and a candidate must already be approved for testing by LARA before PSI will let them register. Since 11/14/19 the Residential Builder exam has been a single combined sitting of 160 multiple choice questions in 240 minutes, made up of the 50 question Business and Law section plus the 110 question Practice and Trade section given back to back; candidates can no longer sit for the two sections separately. The passing raw score is 116 out of 160. This exam is CLOSED BOOK: no reference materials of any kind are allowed in the examination room, so tabbing and highlighting rules do not apply, there is nothing to bring in.

The Business and Law section covers, per the bulletin's point weighting, regulatory and statutory requirements including licensing, complaints, investigations, hearings, arbitration, permitting, civil rights, fair housing and ADA, and EPA hazardous materials rules (13 questions), types of business organization (4), estimating (1), contracts (7), project management and administration (6), accounting and finance (6), insurance, bonds and liens (11), and personnel and labor law (2). The Practice and Trade section covers site engineering (5), plans, specifications and estimating (14), excavation and sitework (9), footings and foundation walls (11), concrete (7), carpentry (16), masonry (9), roofing (7), insulation (5), ventilation (2), windows, doors and skylights (5), siding installation (3), interior and exterior finishes (5), specialties like pools and smoke detectors (2), and safety and MIOSHA (10). These are the official content outline areas the bulletin lists, not actual test questions.

Because the exam is closed book, the bulletin's suggested study materials are for study only and cannot be brought to the test center. Named titles with the editions the bulletin gives: Michigan Residential Code, 2015; Pipe and Excavation Contracting, 2011, by Dave Roberts (Craftsman Book Company); Carpentry and Building Construction, 2010 edition, John L. Feirer and Mark D. Feirer (McGraw Hill); BCSI Guide to Good Practice for Handling, Installing, Restraining, and Bracing of Metal Plate Connected Wood Trusses, 2013, updated March 2015 (Structural Building Components Association and Truss Plate Institute); The Contractor's Guide to Quality Concrete Construction, 2nd edition, 1998 (American Concrete Institute); Modern Masonry, Brick, Block, Stone, 8th edition, 2015, by Clois E. Kicklighter (Goodheart Willcox); Roofing Construction and Estimating, 1995, by Daniel Atcheson (Craftsman Book Company); Walkers Insulation Techniques and Estimating Handbook, 1983; Building Trades Print Reading, 2000, by Thomas E. Proctor; Construction Contracting, Seventh Edition, 2005, by Richard H. Clough, ISBN 0 471 44988 1 (John Wiley and Sons); and Builder's Guide to Accounting, Revised Edition, 2001, by Michael C. Thomsett. The bulletin also lists free statutory references: the Occupational Code Article 24, MCL 339.2401 through 339.2412; Michigan Administrative Code R 338.1511 through 338.1566; the Construction Lien Act, 1980 PA 497; the Elliott Larsen Civil Rights Act; the Workers' Disability Compensation Act of 1969; and Michigan OSHA/MIOSHA standards.

Testing happens only at PSI's seven Michigan computer centers: Dearborn, Holt (Lansing area), Southfield Crossroads, Southfield Lahser Road, Grand Rapids, Gaylord, and Marquette. The bulletin names no neighboring state test center and no remote or online proctoring option for this exam; everything is in person at one of those seven Michigan sites. On retakes, the bulletin does not state a mandatory waiting period between attempts; it only says the retest fee is the same as first time testing and that the fee is good for one year from the date of registration. The deadline that matters most is the statutory one: all licensure requirements, including passing the exam, must be completed within one year of the date the license application was received by the Department, or the application is void and the fee is forfeited. First time and retest are both $117 for the full combination exam. Effective 9/1/24 the exam is also offered in Spanish, but the Spanish version can only be scheduled by phone, not online.

Maintenance and Alteration (M&A) Contractor examinations

M&A candidates schedule and test through the same PSI portal and phone line as Residential Builder. Rather than one exam, M&A is 13 separate trade specific combination exams, one per craft: Basement and Waterproofing, Carpentry, Concrete, Excavation, Gutters, House Wrecking, Insulation Work, Masonry, Roofing, Siding, Screen and Storm Sash, Swimming Pools, and Tile and Marble. Every trade exam embeds the same 50 question Business and Law section described above, plus a trade specific portion of 25 to 50 questions depending on the craft. Total questions, passing raw score, and time limit by trade, all closed book, all 135 minutes: Basement and Waterproofing 100 questions, pass 72; Carpentry 100, pass 72; Concrete 105, pass 76; Excavation 90, pass 65; Gutters 85, pass 61; House Wrecking 75, pass 54; Insulation Work 100, pass 72; Masonry 100, pass 72; Roofing 100, pass 72; Siding 95, pass 68; Screen and Storm Sash 85, pass 61; Swimming Pools 100, pass 72; and Tile and Marble 100, pass 72. A candidate may register for a maximum of two trades at once, which doubles the time allowed to 270 minutes for that single sitting.

The trade specific content outline and suggested study materials for each craft are published in separate trade supplements, not in the master bulletin. The specific content breakdown and book list for an individual trade, such as Concrete or Masonry, is not stated in the board materials reviewed for this page; confirm the current trade supplement with PSI rather than assuming it mirrors the Practice and Trade section of the Residential Builder exam.

Testing location, the absence of a neighboring state or remote option, and the CLOSED BOOK rule are identical to the Residential Builder exam above. Fees are per registration by number of trades taken, identical for first time and retest: one trade $70, two trades $99, three trades $114 (M&A first timers must sit for at least one trade and may sign up for at most two at once, so the three trade fee tier applies to a later separate registration). Fees are valid for one year from the date of registration, and the same one year total application to licensure clock described above applies.

Master Electrician examination

Electrical exams (Journeyman Electrician, Master Electrician, Fire Alarm Specialty Technician, and Sign Specialist) schedule through the PSI Michigan electrical exam portal or the same 855 579 4635 line. The Master Electrician exam is 76 questions in 180 minutes, with a minimum passing score of 75 percent. Unlike the RB and M&A exams, this one is OPEN BOOK. It covers, per the bulletin's description, the Skilled Trades Regulation Act and its rules, the current Michigan Electrical Code Rules Part 8, the Stille DeRossett Hale Single State Construction Code Act (1972 PA 230) and codes adopted under it, and electrical theory; specific installation topics named are grounding and bonding, overcurrent protection, wiring methods and installations, boxes and cabinets, services, feeders, motors and motor controls, special occupancies, load calculations, lighting, appliances, box and raceway fill, and power limited circuits, plus the bulletin notes the Master level adds knowledge needed to plan and supervise electrical installations, beyond the Journeyman exam's scope. These are the official outline topics, not the actual questions.

Approved references for the exam room: the National Electrical Code (NEC) itself (exam items are written to the 2023 edition, but the bulletin says other editions of the NEC may be brought in), 2016 PA 407 (the Skilled Trades Regulation Act), 1972 PA 230, and the Michigan Electrical Code Rules Part 8. Tabbing and highlighting rules are specific: the NEC code book itself may carry only factory markings or factory tabs, nothing added by the candidate. Any material printed from the BCC website must be bound with 3 staples along the left edge as separate documents, and highlighting, marking, underlining, indexing, or tabs added by the candidate anywhere in any printed reference is not permitted and will be reported to BCC if caught. No loose or attached extra papers of any kind may accompany the approved references. The NEC Handbook (the annotated commentary version, as opposed to the Code itself) is explicitly not allowed in the exam room. A straight edge rule without calculation markings may be brought.

Testing is at the same seven Michigan PSI centers listed above (Dearborn, Holt, Southfield Crossroads, Southfield Lahser Road, Grand Rapids, Gaylord, Marquette); the bulletin names no neighboring state option and no remote or online proctoring for this exam either. On retakes, Master Electrician, Journeyman Electrician, and Sign Specialist candidates are limited to 2 attempts within 1 year, after which the candidate must reapply with the state to become eligible again; Contractor and Fire Alarm Specialty Technician candidates get unlimited attempts within that same 1 year window. The exam fee is $100, not refundable or transferable, valid for one year from the date of payment; extra time (time and a half) can be requested for an additional $50.

Mechanical Contractor examination (HVAC Equipment classification)

Mechanical exams schedule through the PSI Michigan mechanical exam portal or 855 579 4635. Mechanical Contractor licensing is broken into many separate single classification exams (Hydronic Heating and Cooling and Process Piping, Ductwork, Refrigeration, Limited Heating Service, Unlimited Heating Service, Limited Refrigeration and Air Conditioning Service, Unlimited Refrigeration and Air Conditioning Service, Fire Suppression, Solar Heating and Cooling, Solid Fuel Equipment and Vented Decorative Gas Appliances, LP Distribution Piping, Fuel Gas Piping, and Fuel Gas Piping and Venting), each 55 questions, 1 hour, 75 percent passing, $50, plus the broadest classification most applicants will want, HVAC Equipment, which includes ductwork and gas piping and is the classification this brief treats as "the" Mechanical Contractor exam: 150 questions, 3 hours (180 minutes), 75 percent passing, $100.

HVAC Equipment is OPEN BOOK. Per the bulletin, it covers heating and cooling principles and theories, installation of HVAC equipment and systems for air conditioning, installation of ductwork, gas piping and venting, and knowledge of codes and standards, specifically forced air heating and cooling systems in residential and commercial applications, heat pumps (air to air and water to air), mini splits, rooftop units from 2 to 25 tons, geothermal systems, commercial kitchen exhaust systems for type 1 and type 2, complete duct systems in commercial and residential applications, type B vents, gas piping systems using natural gas, propane, and fuel oil, layout and installation of CSST piping systems, and exhaust and special venting systems. Some of the narrower single classification exams (Limited Heating Service, Unlimited Heating Service, Limited Refrigeration and Air Conditioning Service, and Unlimited Refrigeration and Air Conditioning Service) are CLOSED BOOK, described in the bulletin as "knowledge based," while the rest, including HVAC Equipment, are open book; check the specific classification before assuming the open book rule applies.

For the exact list of what can be brought in for each classification, the bulletin points candidates to a named reference materials PDF, titled Mechanical Contractor Licensing Exam Reference Materials, hosted under lara/bcc media/Licensing/Mechanical/ on the Michigan state website. The exact named titles and editions approved for the Mechanical exams are not stated in the board materials reviewed for this page; confirm the current reference list through that link before relying on a specific title. The general binding and marking rule is the same as Electrical: all printed reference material must be bound with 3 staples along the left edge as separate documents, and highlighting, marking, underlining, indexing, or tabs are not permitted in any printed document.

Testing is again at the same seven Michigan PSI centers (Dearborn, Holt, Southfield Crossroads, Southfield Lahser Road, Grand Rapids, Gaylord, Marquette), with no neighboring state center and no remote or online proctoring named in the bulletin. Candidates get unlimited retakes within the one year eligibility window; if the exam is not passed within that year, the candidate must reapply with the Department. All Mechanical exam fees are not refundable or transferable and are valid for one year from the date of payment; extra time (time and a half) can be requested for an additional $50 per exam.

Across all four programs covered in this section, the same core security rules apply at every PSI Michigan center: no personal electronics, bulky clothing, hats, or outside paper of any kind in the test room; arrival 15 to 30 minutes early; one piece of current government issued photo ID with a signature; and any candidate caught giving or receiving help, or carrying unauthorized material, has the result invalidated and reported to BCC. None of the three bulletins referenced for this section mention a remote proctoring option, an out of state or neighboring state test center, or a computer based practice at home option for RB, M&A, electrical, or mechanical; testing is strictly in person at PSI's seven physical Michigan sites. A reference to remote online proctoring for Michigan plumbing exams traces to the Department of Insurance and Financial Services' insurance licensing program, not the Bureau of Construction Codes, so it does not apply to the programs covered here; in person testing is the pattern for every program in this file.

Bulletins referenced in this section: Residential Builder, Maintenance and Alteration (M&A) Contractor, and Salesperson Handbook, PSI Services LLC, copyright 2024, updated 11/1/2024 (PSI Michigan builder handbook; program page PSI Michigan builder exam portal); Michigan Electrical Candidate Information Bulletin, PSI Services LLC, effective 4/7/2026 (PSI Michigan electrical bulletin; program page PSI Michigan electrical exam portal); and Michigan Mechanical Candidate Information Bulletin, PSI Services LLC, effective 4/29/2026 (PSI Michigan mechanical bulletin; program page PSI Michigan mechanical exam portal). Checked 2026-07-14.

Experience

No work experience requirement, only education and exam

Unlike states such as Utah or Georgia that require a set number of paid experience hours, Michigan does not require prior construction work experience for the RB or M&A license. The requirement instead is 60 hours of LARA approved prelicensure education, with at least 6 hours in each of 6 areas: business management, estimating and job costing; design and building science; contracts, liability and risk management; marketing and sales; project management and scheduling; and the current Michigan residential code, plus construction safety content under Michigan's occupational safety and health act, followed by passing the state exam (MCL 339.2404b(1)). The only experience based path is a narrow military exemption: a veteran who performed construction work in the armed forces can use a commanding officer's affidavit for credit toward the 60 hour requirement instead of taking the courses (MCL 339.2404b(11) through (13)). In Michigan, a qualifying agent is built through a class and a test, not years on a job site.

Fees and timeline

Application and processing timelines

A single confirmed processing time is not stated in the board materials reviewed for this page. Estimates reported elsewhere range from approximately 3 to 5 weeks, with applications reviewed in order of receipt, to 3 weeks, 6 to 8 weeks, or 4 to 8 weeks depending on the source; confirm current processing times with LARA directly.

According to the Michigan LARA fee schedule, application fees are 195 dollars for the Residential Builder or Maintenance and Alteration Contractor license application, covering the first three year license. Once issued, the RB or M&A license runs on a 3 year cycle (MCL 339.2404(5)). According to the Michigan LARA fee schedule and MCL 338.2239, the renewal schedule is a 3 year cycle; renewal is 150 dollars (50 dollars per year under MCL 338.2239), or 170 dollars if late.

Reciprocity

Reciprocity and out of state applicants

Michigan has no reciprocity or exam waiver agreement with any other state for the RB or M&A license, so an out of state contractor must complete the same 60 hour course and PSI exam as anyone else. LARA's own Residential Builder FAQ states directly, "the State of Michigan does not reciprocate with any other state for licensing... you are required to take and pass an examination" (Michigan LARA Builders FAQ). LARA does offer an "Out of State License Verification" form that lets an applicant get relevant out of state experience credited toward exam eligibility, but that is an experience credit pathway, not a reciprocity or waiver of the Michigan exam itself. Michigan does allow nonresidents and foreign corporations to hold the license itself, as long as the business is authorized to do business in Michigan and it files an irrevocable consent to accept service of legal process through the department (MCL 339.2406).

One item to watch: House Bill 6059 of 2026, introduced June 9, 2026 by Representatives Tisdel and Aragona, would add a licensing reciprocity provision to the Skilled Trades Regulation Act (2016 PA 407) for people holding an out of state license (Michigan Legislature). The bill has only been read a first time and referred to the House Committee on Regulatory Reform; it has not been voted out of committee or enacted. It also amends the Skilled Trades Regulation Act, which covers electrical, plumbing, and mechanical work, not Article 24, so even if it passes it would not by itself create reciprocity for the RB or M&A license. Michigan reciprocity is not currently in place; this bill is one to watch, not a confirmed change.

Trades

Trades overlay: electrical, plumbing, and mechanical (HVAC)

Electrical, plumbing, and mechanical contractors are licensed separately from the RB and M&A system, under the Skilled Trades Regulation Act, Act 407 of 2016, and Article 24 explicitly exempts licensed electrical, plumbing, and mechanical contractors from also needing an RB or M&A license for their own trade work (MCL 339.2403(g), (h), (i)).

Electrical: an Electrical Contractor license requires the firm to hold or employ a Master Electrician. To become a Master Electrician a person must be at least 22 years old, hold a journeyman electrician license for at least 2 years, and document 12,000 hours of experience over at least 6 years, then pass the Master Electrician exam through PSI at a 75 percent minimum score. There is no separate exam for the Electrical Contractor license itself, only the application. According to the Michigan Skilled Trades Regulation Act, the financial requirement is not stated for the RB or M&A license, and no statewide bond is set for the electrical contractor license. Initial application fees run 40 dollars for journeyman, 50 dollars for master, and 55 dollars for the contractor license, and the contractor license renews on a 3 year cycle by December 31 (Michigan LARA Electrical Examination, Licensing and Registration and Application Information page).

Plumbing: a Master Plumber needs 4,000 hours, at least 2 years, as a licensed journeyman plumber immediately before applying, and pays a 300 dollar license fee plus a 100 dollar exam fee. A Plumbing Contractor license requires the applicant to either be a Master Plumber personally or to employ one as the qualifying representative, and only a sole proprietor, a partner, a corporate officer, or an LLC member may apply for the contractor license, with a 300 dollar application fee (Michigan LARA Obtaining a Plumbing Contractor License in the State of Michigan; Plumbing Examination, Licensing and Registration and Application Information page).

Mechanical (HVAC): a Mechanical Contractor license under Article 8 of the Skilled Trades Regulation Act requires 3 years or 6,000 hours of experience, though up to 1 year or 2,000 hours of that clock can be credited for a 2 year HVAC program from an accredited school or a Department of Labor approved training program. The applicant must pass a licensing exam covering Michigan's mechanical code, fuel gas code, and relevant parts of the Michigan building code, and every mechanical contracting business needs its own qualifying officer who personally passed that exam. The license fee is 300 dollars for the initial application and 300 dollars to renew; the license renews every 3 years by August 31, an applicant can start renewing up to 90 days before expiration, and a late renewal carries a 100 dollar late fee (Michigan LARA License/Registration Renewals page). Qualifying officers owe 6 continuing education hours per renewal cycle. Anyone handling refrigerant also needs the federally required EPA Section 608 certification, separate from the state license.

The board

Who licenses contractors, and the single biggest thing to know

The Michigan Department of Licensing and Regulatory Affairs (LARA), through its Bureau of Construction Codes, licenses residential builders and residential maintenance and alteration contractors statewide through the Residential Builders and Maintenance and Alteration Contractors Board, a 9 member board made up of 4 builders, 2 maintenance and alteration contractors, and 3 public members (Michigan LARA, MCL 339.2402). LARA and the Bureau of Construction Codes separately license electrical, plumbing, and mechanical (HVAC) contractors under the Skilled Trades Regulation Act, a different statute with its own boards.

The key fact to know: Michigan has no statewide general contractor license for commercial construction. The state level license only covers residential structures as narrowly defined by statute, a detached dwelling for one or two families, or a townhouse of not more than 3 stories with its own separate exit, along with facilities attached to that dwelling (MCL 339.2401(c)). Commercial construction work is not covered by a Michigan state license; the applicable requirement depends on the city or county where the work takes place.

License types and the monetary floor

Michigan issues two state level license types under Article 24 of the Occupational Code, 1980 PA 299. A Residential Builder (RB) license allows the holder to build new residential structures from the ground up. A Maintenance and Alteration (M&A) Contractor license is limited to repair, alteration, addition, subtraction, improvement, wrecking, or demolition of an existing residential structure, plus building a garage or laying concrete on residential property, and it is issued craft by craft: carpentry, concrete, swimming pool installation, waterproofing a basement, excavation, insulation work, masonry work, roofing, siding and gutters, screen or storm sash installation, tile and marble work, and house wrecking (MCL 339.2404(3)). There is no dollar tiered classification system; instead there is a floor exemption. Anyone working a single project where the total contract price for labor and materials combined is under 600 dollars does not need a license at all, and that exemption cannot be used by splitting one job into smaller contracts to get under it. The statute defines the exemption as applying to "a person that is working on 1 undertaking or project by 1 or more contracts, if the aggregate contract price for the labor, material, and any other items for the undertaking or project is less than $600.00" (MCL 339.2403(f), Michigan Legislature, section last amended by 2016 PA 412, effective April 4, 2017). A person who already holds an RB or M&A license, or who is the qualifying officer of one, does not have to retake the exam to add a second license; for example, a maintenance and alteration holder can add a builder license without repeating the exam, provided the new license is of the type the exam applies to (MCL 339.2410).